Dark matter, Mach's ether and the QCD vacuum

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SUMMARY

The discussion centers on the paper titled "Dark matter, Mach's ether and the QCD vacuum" by Gilles Cohen-Tannoudji, which posits that Mach’s ether, dark matter (DM), and the Quantum Chromodynamics (QCD) vacuum are manifestations of a single entity. The paper argues that the LCDM model reveals that Mach’s ether, encompassing dark matter and dark energy (DE), constitutes 95% of the universe's content. The conversation also touches on the implications of Einstein's theory of relativity regarding ether and the potential confusion surrounding the identification of DM and DE as Mach's ether.

PREREQUISITES
  • Understanding of dark matter and dark energy concepts
  • Familiarity with Quantum Chromodynamics (QCD)
  • Knowledge of Einstein's theory of relativity
  • Basic grasp of cosmological models, particularly the LCDM model
NEXT STEPS
  • Read the paper "Dark matter, Mach's ether and the QCD vacuum" (arXiv:1507.00460)
  • Explore the implications of the LCDM model in modern cosmology
  • Investigate the Brans-Dicke theory and its relation to scalar fields
  • Study the role of ether in the context of general relativity
USEFUL FOR

Physicists, cosmologists, and researchers interested in the intersections of dark matter, dark energy, and theoretical physics, particularly those exploring the philosophical implications of these concepts.

wolram
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I have found this paper, it seems interesting although i haven't read it all yet arXiv:1507.00460 [pdf]
Dark matter, Mach's ether and the QCD vacuum
Gilles Cohen-Tannoudji
Subjects: History and Philosophy of Physics (physics.hist-ph); Cosmology and Nongalactic Astrophysics (astro-ph.CO)
 
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Thank you wolram for that link.

His basic conjecture is,
Mach’s ether, dark matter and QCD vacuum are three modes of existence of a same entity."

He uses Einstein and Lemaitre's comments to builds his case, which may be now a little outdated.

I also found it a bit confusing as later he says,
So, if our conjecture is correct, one can say that the main discovery of LCDM is that the Mach’s ether (dark matter + dark energy) not only exists, which hitherto had never been clearly established, but also represents 95% of the content of the universe. What a beautiful confirmation of the Einstein’s statement that “according to the general theory of relativity, space without ether is unthinkable”!

So is he suggesting DM or DE as 'Mach's ether", or both?

Personally I would have taken the Brans Dicke route and suggested that their scalar field might be called 'Mach's ether' and is the same as DE, and possibly the QCD vacuum, rather than the same as DM. But then you would have to find a way of having a massive enough scalar field without it perturbing solar system GR experiments...

Garth
 

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